13.21.8.8 Synchronization Busy
| Name: | SYNCBUSY |
| Offset: | 0x1C |
| Reset: | 0x00000000 |
| Property: | - |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| CTRLB | ENABLE | SWRST | |||||||
| Access | R | R | R | ||||||
| Reset | 0 | 0 | 0 |
Bit 2 – CTRLB CTRLB Synchronization Busy
Writing to the CTRLB when the SERCOM is enabled requires synchronization. Ongoing synchronization is indicated by SYNCBUSY.CTRLB=1 until synchronization is complete. If CTRLB is written while SYNCBUSY.CTRLB=1, an APB error will be generated.
| Value | Description |
|---|---|
| 0 | CTRLB synchronization is not busy. |
| 1 | CTRLB synchronization is busy. |
Bit 1 – ENABLE SERCOM Enable Synchronization Busy
Enabling and disabling the SERCOM (CTRLA.ENABLE) requires synchronization. Ongoing synchronization is indicated by SYNCBUSY.ENABLE=1 until synchronization is complete.
Writes to any register (except for CTRLA.SWRST) while enable synchronization is on-going will be discarded and an APB error will be generated.
| Value | Description |
|---|---|
| 0 | Enable synchronization is not busy. |
| 1 | Enable synchronization is busy. |
Bit 0 – SWRST Software Reset Synchronization Busy
Resetting the SERCOM (CTRLA.SWRST) requires synchronization. Ongoing synchronization is indicated by SYNCBUSY.SWRST=1 until synchronization is complete.
Writes to any register while synchronization is on-going will be discarded and an APB error will be generated.
| Value | Description |
|---|---|
| 0 | SWRST synchronization is not busy. |
| 1 | SWRST synchronization is busy. |